Polynomial

#How can I write a polynomial function in matlab that can take 3 inputs to predict a forth element?

Thanks

Answer 1

[Steven]

f = @(x,y,z)(x+y+z);

or

f = inline('x+y+z', 'x', 'y', 'z');

or

function f = myfun(x,y,z)
f = x+y+z;
return

give all

>> f(1,1,1) = 3

[Paulo Silva]

good answer, +1 vote, I hope that's what ali needs

[ali Abusnina]

Thanks for your help. do you mean my prediction will be just based on summing up the prevoius three inputs? is there any coeffecients in the functions to be optimized?

[Steven]

you can write any function you want - I just showed you some basic examples - such as f = @(x,y,z)(2*x-4*y+pi*cos(z)). As I understand, you want to optimize your function, so you shold take a look at the optimization toolbox.